Abstract:
Popularity of internet use is rapidly increasing. Hence, the demand is high for Web
based GIS tools. The need to handle heavy maps and attribute datasets, often increase issues
especially with respect to the time taken to serve maps and to filter user desired information for
delivery. A WebGIS based land and water information management system was developed for a land
extent of approximately 2.5km2 within the Moratuwa DSD of Sri Lanka. Information of roads,
buildings were collected as land data while water and stream information were collected using an
extensive field survey. The developed WebGIS application integrates digital base maps and feature
attribute data of the selected case study area and facilitates operations through a user-interface while
offering a variety of querying and reporting options. This application which was named GeoInfo
WebGIS, possesses a very high potential to serve the users through i)Map to Map ii) Map to database
iii) Database to Map and iv) Database to Database functions. The application was tested and verified
through a consideration of user satisfaction and accuracy. GeoInfo WebGIS was developed on MS4W
framework, PostgreSQL was used as the database. Non-responsive situations, high time consumption
when loading the data layers, map overlaying issues and delay in refreshing the maps are
performance issues identified through the application development.
